We are interested in DC1945A combo board and DC890B evaluation board which consist of LTC2185 ADC IC. DC890B is used to acquire data from the DC1945A and Pscope software is use to collect and anlyse data from ADC but our aim is to store data into external memory or in PC so how to store data from the DC890B,kindly advice or please send a solution for the same.
If your using PScope you can collect data and save it by going to File ->save data as. it will produce a *.adc file with some header information and then comma separated data for all the channels. One line in the file is the data for all the channels of sample N, then the next time is N+1, etc.
You can also download Linear lab tools from here: Solutions - LinearLabTools
Then you can use the provided python or matlab scripts to collect data into software and then manipulate it as you see fit.
sir, how to send external trigger on DC890B board through FPGA. and I want to acquire a total block of data within 3sec and I am trying to collect the data for 65536 sizes and the sampling rate is 25 MSPS.please kindly give technical advice.Thank you.
Connect the trigger you want to use to X1 on the DC890, then in the processing options (on the toolbar) select start on positive trigger:
This will allow you to collect data with a trigger.
Do you want to collect continuous data for 3sec? This isn't possible on the DC 890 because of limited memory depth.
yes, sir, I want to collect continuous data for few seconds, please give technical solutions for DC890B collection board if it doesn't work then give details about the other board for continuous data storing. Thank you
If you want to collect data continuously for 3s you will need to use an off the shelf FPGA board that has the memory depth you require. If you are sampling at 125Msps at 16 bits, the FPGA board will need at least 125Msps*2bytes*3s = 750MBytes of storage, probably more. This memory will also need to be fast enough to write data coming in that fast. I'm sure there are demo boards that have that kind of memory, but they will cost a few thousand dollars.